Excelsior-cuttihjg machine



(No Model.) 4 Sheets-Sheet 1.

G. G. SMITH. EXGELSIOR CUTTING MACHINE. No. 424,366. Patented Mar. 25, 1890.

[FNV IE WITNESSES g i @YQZW/ N PUERS. Pholmlnhogmphon Wninvnmm D. C.

(No Model.) 4 Sheets-Shet 2.

U. G. SMITH. EXGELSIOR CUTTING MACHINE.

Patented Mar. 25, 1890.

WHWE'SSES R. FiTERs. mutotimo tw, wnmngim. n, c

(No Model.) 4 sheets-sheet 3.

O. G. SMITH.

EXGELSIOR CUTTING MACHINE. No. 424,366. Patented Mam.- 25, 1890.

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WLYWESSES WVEWTO N. PETERS, Phomulhc n hur. WuMnmon. n. C.

4 Sheets-Sheet 4.

(No Model.)

0. G. SMITH. EXUEL SIOR CUTTING MACHINE.

Patented Mar. 25, 1890.

[WVEWTOR 71 TWESSES Mafia;

UNITED STATES PATENT OFFICE.

CHARLES G. SMITH, OF DETROIT, MICHIGAN.

EXCELSlOR-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 424,366, dated March 25, 1890.

Application filed August 2, 1889. Serial No. 319,588. (Ito model.)

To all whom it 12mg; concern.-

Be it known. that I, CHARLES G. SMITH, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a new and useful Excelsior- Machine, of which the following is a spccification.

My invention relates to improvements in that class of eXcelsior-machines in which the sl1aving-knives and slitters are set in a frame or plate; and it consists in placing a number of shaving-knives and slittingknives in a plate or frame in such a manner as to cut a large number of thin narrow shavings across the whole length of the entire surface of the block of wood at one stroke, this frame or plate running in another frame.

The objects of my improvements are, first, to provide means for slitting the block of wood into narrow strips; second, to provide means for shaving a large number of thin shavings across the entire surface of the block at one stroke; third, to provide means for feeding the block of wood to be cut up to the knife. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a sectional view of the rollerslitter, showing its shaft or bar in elevation. Fig. 2 is a view, partly in section and partly in elevation, of the same. Fig. 3 is a detailed view of one of the slitting-knife blades. Fig. 4 is a detailed view of one of the washers. Fig. 5 is a separate view of one of the bearingsset in the recess in the journal-box bearing. Fig. 6 is a sectional View on the line 00 x of Fig. 5 with the bearing removed. Fig. 7 is a side elevation showing one side of the entire machine. Fig. 8 is a side elevation. showing the opposite side of the entire machine. Fig. 9 is a front elevation of the entire machine. Fig. 10 is a rear elevation of the entire machine. Fig. 11 is a horizontal sectional view 011 the line 3 y in Fig. 8. Fig. 12 is a perspective View of a portion of the cutterplate. Fig. 13 is a perspective view of the end of one of the shaving-knives. Fig. 14 is a sectional view of the cutter-plate S, showing the knives A. projecting the one beyond the other.

B B are the standards of the main frame,

fastened together by rods or belts or in any other suitable way.

B is a table extending from the main frame of a proper height. (See Fig. 11.)

5 is a bracket arising from the table B. (See Figs. 7 and 8.)

6 is an arm extending from the bracket 5 in an opposite direction to the motion of the feed-plate F. (See Figs. 7 and 8.)

7 is a hub projecting from the bracket in the same direction as the arm 6. This hub is perforated through its center to allow the passage of the screw-threaded shaft 8, which is guided at its outer end by the guide-pin 9, the lower end of which runs in a slot N in the arm 6. (See Fig. 11.) The inner end of this screw-shaft is connected in a suitable manner with the feed plate F. (See Figs. 7 and 8.)

10 is a bracket attached to the rear and bottom end of the-feed-plate F, and reciprocates in a groove F in the table B. The end of this bracket rests on the bottom of the groove and supports the feed-plate F. (See Figs. 7 and 8.)

11 are spurs proj eeting from face of the feed-plate to engage the block of wood. (See Figs. 7 and 8.)

Q is a beveled spur-whcel cored out at its center and internally screw-threaded for the reception of the screw-threaded shaft 8.. (See Figs. 7 and 11.)

12 is an arm extending laterally from and properly secured to the bracket 5. This arm is bent so as to stand parallel with the edge of the table B. At the outer end this arm supports by a proper journal the shaft 13. (See Fig. 11.) A spur-wheel V is properly keyed on the inner end of the shaft 13 and meshes with the spur-wheel Q. (See Fig. 11.) A driving-pulley q is properly keyed on the outer end of the shaft 13. (See Fig. 11.)

a is a cord fastened to and wound around the pulley q and led up over the pulley r on side of frame B and carrying at its lower end the weight on. The weight m propels the feed mechanism. (See Fig. 8.)

I I are brackets bolted to the under side of the table B and extending inwardly and upwardly until the upper end is about even with the upper surface of the table B. (See different lengths of the block.

\ in operation.

Fig. 11.) A roller 25, of a like construction of the slitting-roller E, is properly journaled in these brackets, so that it comes slightly above the upper surface of the table 13 to engage with the end of the block which is to be cut to prevent lateral displacement of the block. (See Fig. 11.)

.16 is a slot in the frame B B on the side next to the table. (See Figs. 7 and S.) G is a flat bar inserted in these slots and extending beyond the sides of the frame B B, and carrying at its outer ends rods 15, which support at their lower ends the Weights m. (See Figs. 9 and 10.)

17 are brackets bolted to the bar G, extending downward, having at their lower end prop er 3' ournal-bearin gs for the roller t, which is of similar construction and for the same purpose as the roller t. (See Figs. 9 and 10.)

p are brackets properly bolted on the back side of the frame B and extend downward. (See Figs. 7 and 8.)

0 is a bent lever pivoted on the end of the bracket 19. The shorter arm of this lever is hooked at its outer end and engages with the outer ends of the bar G for the purpose of raising the bar and roller to accommodate the (See Figs. 7

and 8.) The weight m holds the bar G and the dogging-roller t down on the block when (See Figs. 8 and 10.)

y y are slides properly bolted 011 the inside of the frame B, in which the cutter-plate S reciprocates. (See Figs. 9 and 10.)

X is the bolt used to fasten the slides y y and the frames B B together. (See Fig. 11.)

D D aretheposts of the cutter-plate S.

D D are the girts, jointed at the ends of the posts, and together with the posts form the frame for the cutter-plate S. (See Figs. 9 and 10.)

LL are grooves cut in the inner face of the posts D D, of sufficient depth to receive the ends of the shaving-knives A and the projectionj of the journal-box h. (See Fig. 12.)

P is a plate inserted in the grooves L L in the bottom of the 'cuttenplate frame for the purpose of regulating the position of the block when in aposition to be cut. (See Figs. 9 and 10.) The front face of the plate P should be flush with the edge of the grooves L L, in which it is inserted. The mechanism for feeding the, block presses the block against the plate after the knives have completed their cut and the slitter has scored the block on the upward stroke of the knifeplate S.

A is a shaving-knife with edge 0 and shoulder W. (See Figs. 12 and 13.) The only difference in these knives is that the shoulder W, cut or planed on the front of each end, is cut the one-hundredth part of an inch (more or less) deeper than the one immediately below it. The edge of the first knife should project over plate'P, upon which it rests, the one-hundredth part of an inch, (more or less,) this shoulder being cut in the front of the knife at each end. (See Fig. 13.) The set is.

presses the knife A forward and against the front side of the groove L in the post, thus causing the edge of each knife to project the one-hundredth part of an inch, more or less, according to the thickness of the shaving desired beyond the knife immediately below it.

N is a bevel forming the edge of the knife A. (See Fig. 12.) Any desired number of those knives A may be placed in the posts D D one above the other, in the manner indicated in Fig. 12.

One or more of the roller-slitters E, as desired or found necessary, is inserted in the grooves L L in the manner indicated in Figs. 9 and 10.

Z is a block or packing placed in the grooves L L under opposite ends of each alternate knife to give the knife an angle. This not only enables the knife to cut more easily, but it curls the 6XGGlSlO1,WhlOl1 is a desirable feature. These blocks Z are beveled from the rear or inside to the front or outside, as the pitch of the knives may require. (See Fig. 12.)

S is the knife or cutter plate, composed of the posts D D and the girts D D, the plate P, the shaving-knives A, and the slittingroller E, properly j ournaled, and the blocks Z. (See Figs. 9 and 10.)

R is a bracket attached to the lowerend of knife-plate S, in which the pitman Q is properly journaled, (see Figs. 9 and 10,) the pitman Q being connected with the wrist-pin of any convenient crank-shaft. (See Figs. 9 and 10.)

E is a square bar or shaft of the rollerslitter E, having the journals l) I) turned on its ends. 9 g are screw-threads cut on the bar at each end next to the journals and of a larger size than the journals.

0 c are nuts screwed on the screw-thread on the shaft E.

e e are the slitting-knife blades. These blades are made of thin plates of steel of circular form and having cutting-edges. (See Figs. 1 and A square perforation of the size of the square part of the bar is made in the center of these blades. (See Fig.

ff are the washers, of the same form as the slitting-blades, except being smaller in circumference and having the same perforation. These washers are interposed between the slitting-blades and determine by their thickness the width of the excelsior to be cut and by their circumference the depth to which the cutter-blades slit the block. (See Figs. 1, 2, and at.) In putting this roller-slitter together I begin by putting on the nut c at the lower end, which may be provided with a set-screw or other convenient means of fastening it in place and making it permanent, ifdesired. I then put a washer on the bar, sliding it down against the nut. Then I put on a slitting-blade, then a washer, and so on alternately until the square part of the shaft is filled, then screwing on the nut 0. (See Fig. 1.)

h is a journal-boxwith. a recess for the bear- IIO ing of the roller-slitter E, having a rearward projection j. This projection is inserted in the grooves L L in the posts of the cutterframe. (See Fig. 6.) A recess is cored out in the front of this bearing 7L for the reception of the bearing 71. The point on the rear of the recess serves as a pivot on which the journal-box I vibrates. The front or opposite part of the recess is circular in form with its center at the point one, (1.) This circular part covers about ninety degrees or about the quarter of a circle. From the end of this quarter-circle the line curves, as shown in the drawings, around to the point one (1) in such a manner as to leave the point projecting into the recess; thence the line curves backward and downward until it reaches the point 2, thence in a straight line to the point 3, which is the commencement of the circular line, completing the outline of the recess. This recess 1' is cored out to the proper depth to receive the journal-box I. (See Fig. 5.) The journal-bearing is made smaller than the re-- cess in which it is placed. The difference in size of the j ournal-bearing and the recess in which it plays is in their length. The differ ence is equal to the cut of the revolving roll er-slitter. When the journal-bearing is at the lower point of the recess, the slitter is in position to cut into or score the block. (See Fig. 5.) \Vhen the journal-bearing is at its upper point, the roller-slitter is out of contact with the block. Thus when the cutter-plate descends, the roller-slitter strikes the upper end of the block of wood, which presses the bearing upward and backward awayfrom the block of wood and allowing the shavin g-knives to come in contact with the block. Then the cutter-plate ascends, the rollor-slitter by its own weight drops to the lower part of the recess and strikes the lower end of the block, which holds it downward and forward while the slitter-blades perform their work, the roller-slitter being set so that the washers f when in the cutting position project slightly beyond the edge of the sl1aving-knife, thereby preventing the shaving-knives from coming in contact with the block on the upward stroke, thereby greatly lessening the friction of the shaving-knives. One or more of these-rollerslitters may be used in each machine, as desired.

The posts D D, the girts D D, the plate P, the knives A, the roller-slitter E, constructed and journaled as above described, and the blocks Z constitute my cutter-plate S.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, in an excelsior-cutting machine, of the square shaft for carrying the slitting-knives and washers provided with journals at the ends to engage the journal bearing or box suitably connected with the cutter-fra1ne, the screw-threads between the journal and the square portion of the shaft for the reception of the nuts 0 c, the nuts I: c,

for holding the blades and washers in position, the cutting-blades e,'and the washers f,

tion, the cutting-blade e, the washers f,

threaded alternately on the square shaft and held in position by the nuts 0 c, the movable journal box or bearing 1', for the reception of the journal on the slitter, seated in a recess in the proper journal-box bearing, the journal-box. bearing h, provided with suitable re cess to receive the movable journal-box for the journal of the slitting-knife, and provided with a stud j to slide in the grooves L L in the post of the frame D D of the cutterr plate, and the frame of the cutter-plate provided with grooves in the posts for the recep tion of the stud 011 the journal-box hearing, all substantially as shown and described.

3. In an eXcelsior-cutting machine, the combination of the posts D D, provided with grooves L L for the reception of the shavingknives A, and the studj on the journal-box bearing 77, of the roller slitter, the girts orbars D D at the upper and lower ends of the frame for the purpose of connecting the posts' D D and holding the shaving-knives and roller slitter or slitters in place, the shavingknivesinserted in the grooves in the posts of the frame, the journal-bearing box of the roller-slitter inserted in the grooves in the posts of the frame at any desirable point, and the roller-slitter journaled in the journal-box in the journal-box bearing and the journalbox, all substantially as shown and set forth.

4. In an excelsioneuttingmachine, the combination of the shaving-knivcs A, provided with a shoulder W at each end on the outer face of the. knife to engage with suitable grooves or slots in the posts of the cuttert'rame, and suitable set-serews in theposts on the rear of the knife to press the knives forward and hold them in position against; the front part of the grooves L L in the posts D D, all substantially as described.

5. In an eXcelsior-cutting machine, the combination of the shaving-knives A, provided with a shoulder \V at each end on the outer face of the knife to engage with suitable grooves or slots in the posts of the cutterframe, suitable set-screws in the posts 011 the rear of the knife to press the knivesforward and. hold them in position against the front part of the grooves L Liu the posts D D, and the blocks Z, inserted in the grooves in the posts of the cuttcr frame under opposite ends ICO ITO

of each alternate knife, giving an angular set to the knives, all substantially as shown and described.

6. In an eXcelsior-cutting machine, the combination of the shaving-knives A, provided with a shoulder W at each end on the outer face of the knife to engage with suitablegrooves or slots in the posts of the cutterframe, suitable set-screws in the posts on the rear of the knife to press the knives forward and hold them in position against the front part of the grooves I, L in the posts D D, the

blocks Z, inserted in the grooves in the posts of the cutter-frame under opposite ends of each alternate knife, giving an angular set to the knives, the journal-box bearing inserted in the groove in the posts of the cutter-plate at any point desired with reference to the shaving-knives, the movable journal-box inserted in the recess in the journal-box bearing h, and the roller-slitter journaled in the journal-boxes, all substantially as set forth, and for the purposes described.

7. In an eXce1sior-eutting machine, the combination of the standards 13 B, carrying the cutter-plate S, the table B, carrying the feed mechanism, the bracket 5, arising from the table and carrying the hub 7, the arm 6, extending from the bracket, slotted to receive the guide-pin 9 at the outer end of the screwthreaded feed-shaft O, the hub 7 on the bracket, perforated for the passage of the feed-shaft, the screw feed-shaft passing through the hub 7, having at its outer end a guide-pin which runs in the slot in the arm 6, the feed-plate F, attached to the inner end of the screw feed-shaft, supported by brackets 10, which reciprocates in the groove in the table B, the beveled spur-wheel Q, cored out at its center, internally screw-threaded to receive the screw-threaded feed-shaft, the arm 12, extending horizontally from the bracket 5 and supporting at its outer end in a proper journal the shaft 13, the shaft 13, hearing on its inner end the spur-wheel V, meshing with the spur-wheel Q, the driving-pulley q, keyed 011 the outer end of the shaft 13, the cord to on the pulley q, the pulley r on the side of the frame D, and the weight n on the lower end of the cord a, all substantially as set forth and described.

8. In an. eXcelsior-cutting machine, the combination of the standards B B, carrying the cuttenplate S, the table B, carrying the feed mechanism, the brackets I I on the under side of the table, supporting at their outer ends the doggingroller t, and the doggingroller '6, all substantially as shown and described.

9. In an eXcelsior-cutting machine, the combination of the standards B B, carrying the cutter-plate S, the table B, the slot 16 in the frame B B, for the reception of the bar G, the bar G, inserted in the slot 16, the rods 15, attached to the outer ends of the bar G and carrying at their lower ends the weights m m, the brackets 17, projecting downward from the bar G and having at their lower ends proper j ournal-bearin gs for the clogging-roller t, and the dogging-roller i, all substantially as shown and described.

10. In an excelsiorcutting machine, the combination of the standards B B, carrying the cutter-plate S, the table B, the slot 16 in the frame B B, for the reception of the bar G,

the bar G, inserted in the slot 16, the rods 15,

attached to the outer ends of the bar G and carrying at their lower ends the weights m m, the brackets 17, extending downward from the bar G and having at their lower ends proper journal-bearings for the dogging-roller t, the dogging-roller t, the bracket 19 011 the back side of the standard B, supporting the bent lever 0, and the bent lever 0, pivoted to the bracket 13 and engaging by' its shorter arm the outer ends of the bar G, all substantially as shown and described.

11. In an eXcelsior-cutting machine, the combination of the standards B B with the slides y y on the inside of the standards, the slides y y, in which the cutter-plate S reciprocates, and the cutter-plate S, having the shaving-knives A and the slitting-roller E, all

substantially as described.

12. In an eXcelsior-cutting machine, the combination of the standards B B with the slides 1 3 on the inside of the standards, the slides y y, in which cutter-plate S reciproeates, the cutter-plate S, having the shavingknives A and the slitting-roller E, the table B, the bracket I, and the feed mechanism for feeding the block to the cutter-plate, all substantially as shown and described, and for the purposes specified.

CHARLES G; SMITH.

Witnesses:

CHARLES J. HUNT, ARTHUR PETHE noK. 

